Reflector



Patented Oct. 4, 1927.

UNITED STATES GEORGE B. HEATH, 0F ST. LOUIS, MISSOURI.

REFLECTOR.

Application filed July 31, 1925.

rIhis invention relates generallyfto streetlighting systems and, moreparticularly,.to a certain new and useful improvement in lightreflectors especially adapted for use in such systems.

Present day street lighting systems in which the lamp-posts or standardsare located along the street-curb, have been found largelyobjectionable, particularly in residence sections, so far as I am aware,in that the rays of light projected in all directions from the sourcedisturb the privacy of abutting householders. My present invention hashence for its chief object the provision of means in the form' of areflector so shaped and constructed as to for the most part reflect theprojected rays of light outwardly towards the street and thus away from,and thereby obviate disturbance or annoyance of, abutting householdersand yet at the same time permit some of the proj ected rays of light tofilter through tosufiiciently illuminate the adjacent side-walk.

And with such object in view, my invention resides in the novel featuresof form, construction, arrangement, and combination of parts hereinafterdescribed and pointed out in the claims.

Referring now by reference characters to th-e accompanying drawing,which illustrates a street-lamp embodying a preferred form of reflectorembodying my invention, A designates a globe of glass or other suitabletransparent or translucent material and of suitable form and design,topped with a suitable metal or glass cap B and adapted for support, asis common, on a post or standard, not shown. Suitably disposed withinglobe A and adapted for inclusion in an electric circuit, is a bulb C orother source of light-rays.

Depending within globe A, is-an arm D, supported by which within globe Ain suitably centered relation to bulb or other source of light C, is areflector E of my invention. 'This reiiector E is constructed of anysuitable preferably metallic material and has preferably a polishedconvexed inner surface of spherical, parabolic, or other suitablecurvature. A reflector of solid or rather imperforate material wouldreflect all the rays of light emanating from bulb C and cast a solidblack or densely dark shadow. However, the present reflector E is formedor provided with a multiplicity of orifices, perforations, or othersmall apertures or seriai No. 47,344.

openings F, which construction, I have found,` reflects the bright raysof light of bulb C outwardly towards the street and yyet permits some ofthe projected rays to filter through to sufficiently illuminate theadjacent pavement, the shadow cast by the reflector to its rear beingindicated approximately by the dot and dash line of the drawing andbeing soft or mellow. Thus in a simple and inexpensive manner, Ieffectively remove the present stated objection to street lightingsystems of the type mentioned, without, however, affecting theefliciency of the globes A in sufficiently lighting the street andsidewalk.

It will be understood, of course, that a shifting of the reflector Erelatively to the source of light C will vary the line of shadow, thatthe finer the perforations or openings E the denser the cast shadow, andthat minor changes in the form, construction, arrangement, andcombination ofthe several parts of the reflector may be made andsubstituted. for those herein shown and described without departing fromthe nature and principle of my invention.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. In a street lamp, an enclosing globe, a source of light within theglobe, and a reflector disposed within the globe and in centeredrearward relation to the source of light, the reflector comprising abody ofv suitable curvature for reflecting the lightrays outwardlytowards the street, said body being provided with a multiplicity ofperforations for permitting some of the lightrays to filter rearwardlytherethrough for illuminating the adjacent pavement.

2. In a street lamp, an enclosing globe, a source of light within theglobe, an arm disposed within the globe, and a reflector supported bysaid arm within the globe and in centered rearward relation to thesource of light, the reflector comprising a body having a convexedsurface for reflecting the light-rays outwardly towards the street, saidbody being provided with a multiplicity of perforations for permittingsome of the light-rays to filter rearwardly therethrough forilluminating the adjacent pavep ment.

Intestimony whereof, I have signed my name to this specification.

' GEORGE B-

